Linkerror: Cobol program "SQLADR" undefined

i have a small sql-testprogram and precompile it under eclipse with Oracle Pro*Cobol . If the result is a int-file, the run works fine using rtsora.  The compile/link as SingleExecutableFile shows the linkerror: 'Cobol program "SQLBEX"/"SQLADR" undefined'. The OracleInstantClient is installed and then (lib where sqladr and sqlbex is included) ist available in ldconfig-cache.

running the program (" ./pgm") shows a similar error

Load error : file 'SQLADR'
error code: 173, pc=0, call=1, seg=0
173     Called program file not found in drive/directory

What is the problem? How can i resolve link errors?

environment is RHEL, VisualCobol4.0, recent OracleClient


regards lw